• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

Law enforcement operations seized BlackSuit ransomware gang’s darknet sites

 | 

Arizona woman sentenced for aiding North Korea in U.S. IT job fraud scheme

 | 

Operation CargoTalon targets Russia’s aerospace with EAGLET malware,

 | 

Unpatched flaw in EoL LG LNV5110R cameras lets hackers gain Admin access

 | 

Koske, a new AI-Generated Linux malware appears in the threat landscape

 | 

Mitel patches critical MiVoice MX-ONE Auth bypass flaw

 | 

Coyote malware is first-ever malware abusing Windows UI Automation

 | 

SonicWall fixed critical flaw in SMA 100 devices exploited in Overstep malware attacks

 | 

DSPM & AI Are Booming: $17.87B and $4.8T Markets by 2033

 | 

Stealth backdoor found in WordPress mu-Plugins folder

 | 

U.S. CISA adds CrushFTP, Google Chromium, and SysAid flaws to its Known Exploited Vulnerabilities catalog

 | 

U.S. CISA urges FCEB agencies to fix two Microsoft SharePoint flaws immediately and added them to its Known Exploited Vulnerabilities catalog

 | 

Sophos fixed two critical Sophos Firewall vulnerabilities

 | 

French Authorities confirm XSS.is admin arrested in Ukraine

 | 

Microsoft linked attacks on SharePoint flaws to China-nexus actors

 | 

Cisco confirms active exploitation of ISE and ISE-PIC flaws

 | 

SharePoint under fire: new ToolShell attacks target enterprises

 | 

CrushFTP zero-day actively exploited at least since July 18

 | 

Hardcoded credentials found in HPE Aruba Instant On Wi-Fi devices

 | 

MuddyWater deploys new DCHSpy variants amid Iran-Israel conflict

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Hacking
  • CVE-2017-6074 – a new 11-year old Linux Kernel flaw discovered

CVE-2017-6074 – a new 11-year old Linux Kernel flaw discovered

Pierluigi Paganini February 22, 2017

Security expert discovered a new 11-year old privilege escalation vulnerability, tracked as CVE-2017-6074, in the Linux kernel.

A new privilege escalation vulnerability, tracked as CVE-2017-6074, has been discovered in the Linux kernel and the astonishing new is that it is an 11-year old flaw.

The local privilege-escalation vulnerability, discovered by security researcher Andrey Konovalov, affects all the major Linux distro, including Debian, OpenSUSE, Redhat, and Ubuntu.

The flaw discovered by Konovalov resides in the DCCP (Datagram Congestion Control Protocol) implementation using Syzkaller that is a kernel fuzzing tool released by Google.

The Datagram Congestion Control Protocol (DCCP) is a message-oriented transport layer protocol that implements reliable connection setup, maintenance, and teardown, of an unreliable packet flow, and the congestion control of that packet flow.

The flaw is a use-after-free vulnerability in the way the Linux kernel’s “DCCP protocol implementation freed SKB (socket buffer) resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket.”

“In the current DCCP implementation an skb for a DCCP_PKT_REQUEST
packet is forcibly freed via __kfree_skb in dccp_rcv_state_process if
dccp_v6_conn_request successfully returns [3].” reads the description of the flaw published on the full disclosure mailing list.

“However, if IPV6_RECVPKTINFO is set on a socket, the address of the
skb is saved to ireq->pktopts and the ref count for skb is incremented
in dccp_v6_conn_request [4], so skb is still in use. Nevertheless, it
still gets freed in dccp_rcv_state_process.”

CVE-2017-6074

An attacker can control an object and overwrite its content with a pointer to a execute arbitrary code in the Kernel.

“An attacker can control what object that would be and overwrite its content with arbitrary data by using some of the kernel heap spraying techniques. If the overwritten object has any triggerable function pointers, an attacker gets to execute arbitrary code within the kernel,” full disclosure mailing list about the vulnerability reads.

It is important to highlight that the CVE-2017-6074 flaw is a local issue that could not be exploited by a remote attacker. In order to exploit the flaw, an attacker needs to have a local account access on the system.

The CVE-2017-6074 vulnerability has already been patched in the mainline kernel, users can apply the patch and rebuild the kernel of their OS or they can wait for the next kernel update from their Linux distro provider.

In December 2016, security experts discovered another privilege-escalation vulnerability in Linux kernel, tracked as CVE-2016-8655, that dated back to 2011.

The flaw was discovered by the security expert Phil Oester who dubbed it ‘Dirty COW.‘ The flaw could be exploited by a local attacker to escalate privileges.

The name “Dirty COW” is due to the fact that it’s triggered by a race condition in the way the Linux kernel’s memory subsystem handles copy-on-write (COW) breakage of private read-only memory mappings.

[adrotate banner=”9″]

Pierluigi Paganini

(Security Affairs – CVE-2017-6074, Linux)


facebook linkedin twitter

CVE-2017-6074 Hacking LINUX Linux Kernel privilege-escalation vulnerability

you might also like

Pierluigi Paganini July 26, 2025
Law enforcement operations seized BlackSuit ransomware gang’s darknet sites
Read more
Pierluigi Paganini July 26, 2025
Arizona woman sentenced for aiding North Korea in U.S. IT job fraud scheme
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    Law enforcement operations seized BlackSuit ransomware gang’s darknet sites

    Cyber Crime / July 26, 2025

    Arizona woman sentenced for aiding North Korea in U.S. IT job fraud scheme

    Intelligence / July 26, 2025

    Operation CargoTalon targets Russia’s aerospace with EAGLET malware,

    Intelligence / July 25, 2025

    Unpatched flaw in EoL LG LNV5110R cameras lets hackers gain Admin access

    Security / July 25, 2025

    Koske, a new AI-Generated Linux malware appears in the threat landscape

    Malware / July 25, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT